Rotary engine.



PATENTED NOV. 19, 1907.

W. LAUBER. ROTARY ENGINE. APPLICATION FILED APR.15.1907.

7| izmmwzmmm 2 SHEETS- 1 ATTORNE Yg PATENI'ED NOV. 19, 1907.

W. LAUBBR.

ROTARY ENGINE.

APPLIOATION FILED APR.15,1907.

2 SHEETSSHEET 2.

IotlIf IIil INVENTOR 2 ATTORNEY? UNITED STATES PATENT OFFICE.

WILLIAM LAUBER, OF MILWAUKEE, WISCONSIN, ASSIGNOR OF ONRSEVENTH TO LOUISREIMER, ONE-SEVENTH TO JOHN HRDLIGKA, ONE-SEVENTH TO WILLIAM ARNDT, ONE-SEVENTH TO HENRY PATZKE, ONE-SEVENTH TO ELMER WANGERIN, AND ONE-SEVENTHTO CHARLES BOROHERT, ALL OF MILWAUKEE, WISCONSIN.

ROTARY ENGINE.

Specification of Letters Patent.

Patented NOV. 19, 1907.

Application filed April 15. 1907. Serial No. 368,153.

. waukee, county of Milwaukee, and State of W1scons1n, have invented newand useful Improvements in Rotary Engines, of which the following is aspecification.

My invention relates to improvements in rotary engines designed to beused with steam, gas, compressed air or any other form of elastic orexplosive medium.

The object of my invention is to provide a structure of the describedclass in which the gate will be positively raised and loweredthrough'power from the engine shaft, whereby re-action is avoided andthe destructive effects of pounding on the rotary cylinder prevented.

A further object of my invention is to provide means whereby packingrings may be employed to prevent the escape of the motive fluid at theends of the cylinder, regard being also had for efficient packing at thesides and ends of the gate and piston, and

positive control of the admission of motive fluid in synchronism withthe closing movement of the ate.

In the folIowing description, reference is had to the accompanyingdrawings in which Figure 1 is a cross sectional view drawn to a planecutting the gate and gas inlets. Fig. 2 is a central vertical sectionalView drawn to a plane which includes the axis of rotation. Fig. 3 is adetail view of the admission valve and valve mechanism. Fig. 4 is adetail view of the reversing valve and branch ducts leading to thedirect inlet and reversing ports respectively. Fig. 5 is a detail viewof the piston, showing the interacting packing strips.

Like parts are identified by the same reference characters throughoutthe several views.

A casing, formed in two sections, 1 and 2, incloses a rotary cylindricaldrum 3 mounted upon a shaft 4. casing is cylindrical in form withreduced end portions 5 substantially equal in diameter to that of thedrum '3, and a central portion of larger diameter, forming an annularchannel 6 surrounding the central portion of the The interior chamber ofthe adapted to travel in this channel, and the ends of the drum areprovided with packing rings 10 fitting the reduced end portions 5 of thecasing chamber to prevent the escape of the motive fluid. The sides andends of the piston are also provided with packing strips 12 and 13,interacting at their meeting ends, and fitting the walls of the channel6 and preferably expanded, against such walls by springs 14 seated insuch channels.

A movable abutment 15 is mounted in suitable guide ways in the casing,and is adapted to move downwardly across the channel 6 into contact withthe drum 3, the abutment preferably having sufficient weight to move tosuch position by gravity. This abutment is lifted to permit the pistonto pass, by means of cams 17, one mounted on the shaft at each end ofthe drum, and adapted to actuate the gate through posts 18 which areconnected with the gate and provided with shoes 19 for contact with thecam. The under surfaces of the shoes 1.) are preferably rounded asshown, to provide a bearing for the cams.

Inlet ports 20 and 21 are provided on opposite sides of the gate and theadmission of motive fluid is regulated by means of valve 22 actuatedfrom the shaft by cam 24. A main supply pipe 25 is provided withbranches 26 leading to the inlets 20 and 21, and a manually controlledvalve 27 is located at the junction of the main with these branches,whereby the flow of motive fluid to either branch may be controlled. Itwill be understood that the fluid is cut off from one branch andadmitted to the other to reverse the engine.

30 are ignitcrs adapted to be employed where an internal combustion isdesired and 31 are fan wings arranged to direct cooling air currentsthrough the drum, the ends of which are open as is also the casing, nearthe axis.

35 is a startinglever fulcrumed to a bracket 36 and adapted to lift thevalve against the tension of the valve closing spring 37.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is;

1. In a rotary engine, the combination of drum. A piston 8, mounted onthe drum, is a casing provided with a cylindrical chamber f2. scamshaving reduced end portions, a-shaft extending axially through thecylindrical chamber,

a drum mounted on the shaft, with its end portions substantially fittingthe end portions of the chamber and provided with packing rings, apiston mounted. upon the middle portion of the drum and fitting thelarger portion of the chamber, a gate mounted in suitable guides Withinthe chamber and adapted to move radially into and out of contact withthe drum, cam actuated gate supporting posts at the respective ends ofthe drum, and cams mounted on the shaft in a position to actuate saidposts.

2. In a rotary engine the combination with a casing provided withreduced end portions and a rotary shaft extending there through a drummounted on the shaft with its end portions fitting the reduced portionsof the casing, and a piston on the drum,of a reciprocating gate mountedin suitable guides in the casing and provided with inwardly projectingradial posts at each end of the drum and within the casing, and cams onthe shaft at the respective ends of the drum arranged to actuate saidposts outwardly to permit the passage of the piston.

3. A rotary engine comprising a cylin drical chamber provided with asuitable valved admission port, an axially disposed shaft in thechamber, a piston supported therefrom and fitting said chamber, and aretractable gate normally in the path of the piston,said gate havinginwardly projecting radial posts and the shaft being provided with camsadapted to move said posts outwardly to retract the gate, to clear thepiston once during each revolution.

4. A rotary engine comprising a cylindrical chamber provided with asuitable 40 valved admission port, an axially disposed shaft in thechamber, a piston supported therefrom and fitting said chamber, and aretractable gate normally in the path ofthe piston,-the gate beingprovided with inwardly projecting radial posts and the shaft beingprovided with cams adapted to move said posts outwardly to retract thegate, to clear the piston once during each revolution, together withanother cam mounted on the shaft and arranged to control the flow ofmotive fluid through the valved admission port.

In testimony whereof I a'ffix my signature in the presence of twowitnesses.

WILLIAM LAUBER.

I/Vitnesses:

LEVERETT C. WHEELER, HENRY PATZKE.

